US2016059151A1PendingUtilityA1

Ultrathin layer chromatography plates comprising electrospun nanofibers

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Assignee: OHIO STATE INNOVATION FOUNDATIONPriority: Mar 21, 2013Filed: Mar 21, 2014Published: Mar 3, 2016
Est. expiryMar 21, 2033(~6.6 yrs left)· nominal 20-yr term from priority
Inventors:Susan V. OlesikXin Fang
B82Y 40/00G01N 30/92B01D 15/327B29C 47/0004B01J 2220/54B29C 48/022D01F 1/10D01D 5/0007B01J 20/205B01J 20/28007G01N 30/93B29K 2033/20B01J 20/261
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Claims

Abstract

An ultrathin-layer chromatography plate comprising a stationary phase including electrospun composite nanofibers comprising a polymer and at least one of multi-walled carbon nanotubes, edge-plane ordered carbon nanorods and amorphous carbon nanorods, wherein the stationary phase has a thickness between about 5 μm and about 30 μm.

Claims

exact text as granted — not AI-modified
1 . An ultrathin-layer chromatography plate comprising a stationary phase including electrospun composite nanofibers comprising a polymer and at least one of multi-walled carbon nanotubes, edge-plane ordered carbon nanorods and amorphous carbon nanorods, wherein the stationary phase has a thickness between about 5 μm and about 30 μm. 
     
     
         2 . The ultrathin-layer chromatography plate of  claim 1 , wherein the composite nanofibers comprise between 0% and about 2% by weight of multi-walled carbon nanotubes. 
     
     
         3 . The ultrathin-layer chromatography plate of  claim 2 , wherein the surface of the multi-walled carbon nanotubes include carboxylic acid functional groups. 
     
     
         4 . The ultrathin-layer chromatography plate of  claim 2 , wherein the composite nanofibers have an average diameter between about 250 nm and about 450 nm. 
     
     
         5 . The ultrathin-layer chromatography plate of  claim 1 , wherein the composite nanofibers comprise between 0% and about 1% edge-plane ordered carbon nanorods. 
     
     
         6 . The ultrathin-layer chromatography plate of  claim 1 , wherein the composite nanofibers comprise between 0% and about 1% amorphous carbon nanorods. 
     
     
         7 . The ultrathin-layer chromatography plate of  claim 5 , wherein the composite nanofibers have an average diameter between about 300 nm and about 600 nm. 
     
     
         8 . The ultrathin-layer chromatography plate of  claim 1 , wherein the polymer is selected from a polyacrylonitrile, an epoxide polymer, a polycaprolactone, a polystyrene, a polyvinyl alcohol, a poly(methyl methacrylate), a polyhydroxyalkanoate, and a polyethylene. 
     
     
         9 . The ultrathin-layer chromatography plate of  claim 8 , wherein the polymer is a polyacrylonitrile. 
     
     
         10 . The ultrathin-layer chromatography plate of  claim 1 , wherein the stationary phase has a length and a width, and the thickness of the stationary phase is substantially consistent along its entire length and width. 
     
     
         11 . A method of making an ultrathin-layer chromatography plate having a stationary phase comprising composite nanofibers comprising a polymer and at least one of multi-walled carbon nanotubes, edge-plane ordered carbon nanorods and amorphous carbon nanorods, the method comprising:
 electrospinning a solution comprising the polymer and at least one of multi-walled carbon nanotubes, edge-plane ordered carbon nanorods and amorphous carbon nanorods to form a mat comprising the composite nanofibers.   
     
     
         12 . The method of  claim 11 , wherein the composite nanofibers comprise between 0% and about 2% by weight of multi-walled carbon nanotubes. 
     
     
         13 . The method of  claim 12 , wherein the multi-walled nanotubes have been oxidized in acid so that the surface of the multi-walled carbon nanotubes includes carboxylic acid functional groups. 
     
     
         14 . The method of  claim 12 , wherein the composite nanofibers have an average diameter between about 250 nm and about 450 nm. 
     
     
         15 . The method of  claim 11 , wherein the composite nanofibers comprise between 0% and about 1% edge-plane ordered carbon nanorods. 
     
     
         16 . The method of  claim 11 , wherein the composite nanofibers comprise between 0% and about 1% amorphous carbon nanorods. 
     
     
         17 . The method of  claim 15 , wherein the composite nanofibers have an average diameter between about 300 nm and about 600 nm. 
     
     
         18 . The method of  claim 11 , wherein the polymer is selected from a polyacrylonitrile, an epoxide polymer, a polycaprolactone, a polystyrene, a polyvinyl alcohol, a poly(methyl methacrylate), a polyhydroxyalkanoate, and a polyethylene. 
     
     
         19 . The ultrathin-layer chromatography plate of  claim 18 , wherein the polymer is a polyacrylonitrile. 
     
     
         20 . The method of  claim 11 , wherein the solution comprises DMF.

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